| 冯军成,周秀峰,段留安,张朝锋,李海军,高俊飞,刘延虎,黄利锋.内蒙古大红山晶质石墨矿床地质特征及找矿标志[J].矿产勘查,2023,14(1):69-77 |
| 内蒙古大红山晶质石墨矿床地质特征及找矿标志 |
| Geological characteristics and prospecting signs of Dahongshan crystalline graphite deposit in Inner Mongolia |
| 投稿时间：2022-05-08 |
| DOI：10.20008/j.kckc.202301008 |
| 中文关键词: 地质特征 找矿标志 大红山晶质石墨矿床 内蒙古 |
| 英文关键词: geological features prospecting signs Dahongshan crystalline graphite deposit Inner Mongolia |
| 基金项目:本文受放射性地质与勘探技术国防重点学科实验室开放基金项目(2020RGET10)资助。 |
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| 中文摘要: |
| 内蒙古大红山晶质石墨矿床位于阴山隆起的渣尔泰山中—新元古代裂谷带,矿体赋存于中—新元古界蓟县系渣尔泰山群阿古鲁沟组二段的炭质板岩中,目前共圈定矿体2条,其中Ⅰ号矿体为主矿体。本文立足于区域地质与矿产勘查资料,结合前人研究成果,在成矿地质背景、矿床与矿体特征、样品化学分析、矿石矿物赋存状态及特征研究的基础上,总结了内蒙古大红山地区晶质石墨矿床的成矿地质特征及找矿标志。研究表明:(1)大红山晶质石墨矿床是经区域变质作用而形成的区域变质型矿床；(2)该矿床的成矿物质主要来源于变质黏土岩和粉砂质页岩中的有机物；(3)含炭粉砂细晶灰岩与含炭粉砂质板岩接触部位,含矿岩石形成的负地貌是找矿的有利地区。 |
| 英文摘要: |
| The Dahongshan crystalline graphite deposit in Inner Mongolia is located in the middle-Neoproterozoic rift zone of the Zha’ertaishan in the Yinshan uplift. The ore body occurs in the carbonaceous slate of the second member of the Agulugou Formation of the Zha’ertaishan Group in Jixian System of Middle Neoproterozoic. At present, there are 2 ore bodies to be found in the ore area,of which No.1 ore body is the main ore body. Based on regional geological and mineral exploration data, combined with previous research results, and on the basis of metallogenic geological background, characteristics of deposits and ore bodies, chemical analysis of samples, occurrence state and characteristics of ore minerals. This paper summarizes the metallogenic geological features and prospecting signs of crystalline graphite deposits in the Dahongshan area of Inner Mongolia Studies have shown that (1) The Dahongshan crystalline graphite deposit is a regional metamorphic deposit formed by regional metamorphism; (2) The ore-forming materials of this deposit are mainly derived from organic matter in metamorphic claystone and silty shale; (3) The negative landform formed by the ore-bearing rock at the contact position between the carbon-bearing silt fine-crystalline limestone and the carbon-bearing silt slate is a favorable area for ore prospecting. |
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